65726117 has 2 divisors, whose sum is σ = 65726118. Its totient is φ = 65726116.

The previous prime is 65726113. The next prime is 65726119. The reversal of 65726117 is 71162756.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49477156 + 16248961 = 7034^2 + 4031^2 .

It is a cyclic number.

It is not a de Polignac number, because 65726117 - 2² = 65726113 is a prime.

Together with 65726119, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_3880862 and since 65726117 and 3880862 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65726113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32863058 + 32863059.

It is an arithmetic number, because the mean of its divisors is an integer number (32863059).

Almost surely, 2^65726117 is an apocalyptic number.

It is an amenable number.

65726117 is a deficient number, since it is larger than the sum of its proper divisors (1).

65726117 is an equidigital number, since it uses as much as digits as its factorization.

65726117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17640, while the sum is 35.

The square root of 65726117 is about 8107.1645474851. The cubic root of 65726117 is about 403.5642235291.

The spelling of 65726117 in words is "sixty-five million, seven hundred twenty-six thousand, one hundred seventeen".